6591612056 has 8 divisors (see below), whose sum is σ = 12359272620. Its totient is φ = 3295806024.

The previous prime is 6591612007. The next prime is 6591612059. The reversal of 6591612056 is 6502161956.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6591612059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411975746 + ... + 411975761.

Almost surely, 2^6591612056 is an apocalyptic number.

It is an amenable number.

6591612056 is a deficient number, since it is larger than the sum of its proper divisors (5767660564).

6591612056 is a wasteful number, since it uses less digits than its factorization.

6591612056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823951513 (or 823951509 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 6591612056 is about 81188.7434069527. The cubic root of 6591612056 is about 1874.9824762570.

The spelling of 6591612056 in words is "six billion, five hundred ninety-one million, six hundred twelve thousand, fifty-six".